David Greenbaum
Partner @ Quiet Capital
San Francisco, United States
David Greenbaum is a seed investor at Quiet Capital in San Francisco focused on SaaS and Dating. David Greenbaum is the Partner at Quiet Capital. He was the Head of Strategic Finance and Chief of Staff to CEO of Shift Technologie before that. David attended the University of Pennsylvania.
- Total investments:
- 5
- Last investment:
- Lead investor:
- 80%
Last updated:
For AI agents: llms.txt
Industries David Greenbaum invests in
Stages David Greenbaum invests in
Countries David Greenbaum invests in
Contacts
| Type | Contact | Validation |
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| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
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Investment Focus
Industry
- SaaS 1 (20%)
- Dating 1 (20%)
- Medical 1 (20%)
- Health Care 1 (20%)
- Mental Health 1 (20%)
Stage
- Seed 2 (40%)
- Series B 2 (40%)
- Series A 1 (20%)
Country
- United States 2 (40%)
- India 1 (20%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Amae Health provides outpatient care that integrates psychiatric treatment, primary care, therapy, and peer support for adults living with severe mental illness. The company delivers personalized treatment plans through multidisciplinary teams comprising psychiatrists, therapists, primary care physicians, health coaches, dietitians, and peermentors. Its services cover conditions such as schizophrenia, bipolar disorder, refractory depression, trauma, and co-occurring substance-use disorders, and it emphasizes long-term engagement and whole-person wellness. Amae Health also collaborates with academic medical centers to develop clinician training programs and to use data-driven insights to refine care pathways. | $25M / Series B / Nov 06, 2025 | ||
| Amae Health provides outpatient care that integrates psychiatric treatment, primary care, therapy, and peer support for adults living with severe mental illness. The company delivers personalized treatment plans through multidisciplinary teams comprising psychiatrists, therapists, primary care physicians, health coaches, dietitians, and peermentors. Its services cover conditions such as schizophrenia, bipolar disorder, refractory depression, trauma, and co-occurring substance-use disorders, and it emphasizes long-term engagement and whole-person wellness. Amae Health also collaborates with academic medical centers to develop clinician training programs and to use data-driven insights to refine care pathways. | $15M / Series A / Apr 25, 2024 | ||
| Self-improving LLM Applications: AI that optimizes LLM applications by tuning prompts and models | $7.2M / Seed / Apr 24, 2024 | ||
| LocoNav is a provider of an online fleet management software used to deliver a single platform to run and manage fleet operations with ease. Its software offers GPS and intelligent analytics that track vehicle's speed, direction, and smart alerts that enable vehicle owners, businesses, and transporters to improve security, operations andreduce costs.The company was founded in 2015 and is headquartered in San Francisco, California. | $37M / Series B / Jun 29, 2021 | ||
| Uniquely positioned as a new age matrimony platform, Betterhalf envisions to build a super app of Indian matrimony and full stack wedding services as company's growth pillars. Founded by Pawan Gupta and Rahul Namdev, Betterhalf recently raised Series A backed by FinSight Ventures (Ex Bumble investor) & other marquee investors includingMike Krieger, Co-founder of Instagram; Arash Ferdowsi, Co-Founder of Dropbox and many others. | $300K / Seed / May 26, 2021 |
Co-Investors
About Quiet Capital
Quiet Capital is a technology investment firm.
Quiet Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
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David Greenbaum
Partner
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Ben Mahdavi
Managing Partner
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Chris Capozzi
Partner & Chief Financial Officer
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Daniel Gruneberg
Partner
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Jeff Silverstein
Venture Partner
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FAQ
What does David Greenbaum invest in?
David Greenbaum invests primarily in SaaS, Dating and Medical startups, most often at Seed and Series B stage. Most of the 5 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact David Greenbaum?
Public channels for David Greenbaum include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did David Greenbaum last invest?
The most recent investment recorded for David Greenbaum closed in Nov 2025. Shizune tracks 5 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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